When hearing stories like this, and other recent stories like:
www.ukbusinessforums.co.uk/forums/showthread.php?t=28686
it does make me despair. I'm shocked at how cavalier some people are with both their money and their trust. 13 weeks of actual work equates to:
£2,275 (if charging £5 per hour for a 13x35 hour week)
£4,550 (if charging £10 per hour for a 13x35 hour week)
£6,825 (if charging £15 per hour for a 13x35 hour week)
£9,100 (if charging £20 per hour for a 13x35 hour week)
£11,375 (if charging £25 per hour for a 13x35 hour week)
£13,650 (if charging £30 per hour for a 13x35 hour week)
and so on...
Add to that VAT, (for every £1000 there's £175 extra in VAT), and its even more expensive. Then add to that professional web hosting costs (£100-£200 per annum, although these pale into insignificance compared with such ridiculous initial development costs)
Companies wanting advanced online shops for many products can be up and running with a professional, tried and tested, advanced online shop from EKMPowerstore.co.uk, easywebstore.co.uk, or awebapart.com within days for around £250 - £300 per annum.
There's also the risk factor involved with going the custom route, which hasn't been tried and tested before. If the supplier hasn't done this before then they have know idea of what they've let themselves in for, they simply don't know what they don't know, and there's the risk that the project will fail completely, or simply just wont work, or not be fit for purpose, and all of these potential outcomes may be at the client's expense.
If the supplier has only done static html websites in the past and is now attempting to create an advanced online shop from scratch (which involves many other skills like relational databases, server side programming, building dynamic database driven sites, content management, interactive baskets, integration with payment provider system) then the supplier will simply not succeed in creating an advanced online shop in that time, even a skilled supplier wouldn't be able to code a good system from scratch in that time (not one that competes with existing systems, however a clever skilled supplier wouldn't reinvent the wheel, they would spend the time customising an existing online shop system like osCommerce).
I do hope that the supplier is not writing a system from scratch. I hope for your friend's sake that the supplier is customising the right existing online shop system for that money. But even if this is the case, if the supplier hasn't customised an e-commerce system before, and has no server side programming or database skills then there is still a very good chance of either failure or a very bad system. An experience supplier could have done it in far less time. The topic of custom-built or customising existing e-commerce systems is also discussed in:
www.ukbusinessforums.co.uk/forums/showthread.php?t=29170
I hope what we have here with the 13 week quote supplier is a supplier who means well and has good intentions, even if they are costing the client far more than necessary (perhaps due to ignorance of what's available on the market) and may ultimately end up with failure.
There is of course the other situation, where the supplier doesn't mean well and is just trying to bleed the client dry. This can happen if the supplier finds out how much money the client has available, and they miraculously base their quote on this or more, and try to make up work (with an overkill or inappropriate solution) up to this level, or simply pretend to work up to this level, rather than providing an honest quote for exactly how long it will take them to provide the system the client actually needs. Some suppliers do this, after all someone has got to pay for the supplier's plush offices, the staff pool table, the staff that dont actually work on the website (sales people, managers), and their extravagant lifestyle - but this is usually more commonplace with the design agencies who focus on larger wealthier clients.