Your Luton stock lives in Fishbowl, a warehouse spreadsheet, and whatever's in the engineer's van

Fishbowl tracks a single warehouse with planned movements. Your stock moves across vans, jobs, and supplier consignment, and gets consumed in the field before anyone reconciles. Custom software tracks all those locations in real time, which single-warehouse tools weren't built to do.

Through mobile capture. Engineers log a part the moment it's fitted, so the count updates live rather than waiting for someone to reconcile a spreadsheet at the end of the day. This is the difference between knowing your stock and guessing it.

Yes. A custom build can make supplier-held consignment stock visible alongside your own, so it's no longer invisible until someone physically counts it. This closes a common blind spot that drives over-ordering.

£40,000 to £110,000 depending on how many locations, whether you need mobile field capture, and the depth of ERP integration. The multi-location and mobile tracking is the largest cost driver.

That's the main return. When you can see true available stock across warehouse, vans, and consignment, reorder points work off reality instead of a safety guess, freeing the cash currently tied up in stock you couldn't previously see.

Yes, if the architecture is designed for it up front, which is much of the point of building custom. A properly structured stock ledger handles 100,000+ SKUs and peak-season order volume without per-record or per-user pricing, and adding a second warehouse becomes a configuration change rather than a plan upgrade. Systems that fail at scale were built against a demo-sized dataset with a quantity field that gets overwritten.

Excel and Google Sheets typically start failing past roughly 1,000 SKUs, more than one sales channel, or more than two or three people editing stock levels. The failure mode is not the row count but stale, conflicting edits that cause oversells and phantom stock. If someone on your team spends hours each week reconciling the sheet against the shelf, you have already outgrown it.

In quotes Digital Heroes reviews alongside clients, local agencies in Luton typically bill $100 to $200 per hour, while hybrid teams pairing local project leadership with remote engineering land around $40 to $75 per hour. On a 600-hour inventory build, that rate gap separates a roughly $30,000 project from a $90,000 one for comparable output. Compare vendors on shipped inventory systems first and rate second.

Most of the build can run remotely, but if you operate a physical warehouse in Luton, plan at least one on-site visit, because watching a real pick-and-pack surfaces workflow details no video call catches. A hybrid model, local discovery with a remote build team, usually gives the best cost-to-quality ratio. Inventory-specific track record matters far more than where the agency sits.

Replace Fishbowl when you are paying for workarounds: manual exports to cover missing reports, third-party connectors patching integration gaps, or processes bent to fit its QuickBooks-centric model. Fishbowl remains a solid choice for QuickBooks-linked manufacturing inventory, so if it fits your workflow, keep it. Custom wins when your process is the differentiator, for example serialized rentals, consignment stock, or a picking flow Fishbowl cannot model.

Start with a minimum viable product covering the single most painful workflow, usually receiving, movements, and scanning for one location, then extend in phases. In Digital Heroes delivery experience, phased builds put a working system on the warehouse floor in 8 to 12 weeks and let real feedback shape phase two, while big-bang builds routinely ship features nobody uses. Phasing also spreads the budget across quarters instead of demanding it all up front.

The crossover usually shows up between 20 and 50 seats on premium tiers. Salesforce Enterprise lists at $165 per user per month, so 40 users cost about $79,000 a year in subscriptions, which is real money against a custom system you would own outright. Run the comparison over three years: if subscription spend beats the build cost plus 15-20% annual maintenance, custom wins on price before you even count workflow fit.

Divide the build cost by the monthly benefit, where benefit is hours saved times loaded hourly cost, plus subscription fees replaced, plus any revenue the software unlocks. Three staff saving 10 hours a week each at a $40 loaded rate is about $62,000 a year, which pays back a $60,000 build in roughly 12 months. Across Digital Heroes internal-tool projects, 12 to 24 months is the normal payback range, and anything projecting under 6 months usually means the spreadsheet is hiding costs.

For a simple single-user stock tracker, a strong freelancer works and costs roughly half as much. Once real revenue flows through the system, choose an agency, because inventory software fails in production rather than in the demo, and a solo developer is a single point of failure during your busiest week. The most expensive engagements Digital Heroes takes on are rescues of freelancer builds after an oversell incident.

Add three numbers: the subscriptions and per-user fees the system replaces, the hours your team spends on manual counts and reconciliation, and the cost of oversells and dead stock caused by bad counts. Most systems Digital Heroes has delivered reach payback in 18 to 36 months, faster when they replace a subscription stack above $500 per month. If all three numbers are small, custom is premature and an off-the-shelf tool is the honest recommendation.

A single-location system with receiving, stock movements, and barcode scanning typically runs $15,000 to $40,000, based on Digital Heroes delivery experience across 2,000+ projects. Multi-warehouse, multi-channel builds land between $40,000 and $120,000, and manufacturing or forecasting features push past that. The biggest cost driver is logic rather than screens: lot tracking, unit conversions, and channel sync each add real engineering time.

Digital Heroes builds custom inventory management software systems for operators who have outgrown the off-the-shelf tools in their category. The work is delivered remotely: our engineers work from Delhi and Lucknow, leadership is in New York, and some team members live in London and Sydney and work remotely from there. We have no office in Luton. You can chat with the team directly, and every form gets an email reply within 24 hours.