Chris B, your figures (300 colonies) and therefore your perception of things as they are, are in a different league to the average beek.
I reckon the cost for me to start up is going to be around £1000.00 This is because I want at least two colonies but preferably three. I will be using the honey, for me and my family and "may", venture into selling it off the drive at a later date. If this happens at all, it will not be for at least a couple of years. I will never see a return financially for my outlay. This is not my aim anyway I want bees for all the pleasures they seem to bring. But your talking on a commercial scale which has a totally different perspective than than the pottering beekeeper in his back garden.
In a total business sense, beekeeping I would estimate rarely returns a profit when accounting for labour costs. Start up costs (books, courses, equipment, internet, premises, insurance) and the afore mentioned fuel, appropriate vehicle etc..
Value of bees would be hard to estimate in a total business sense. If it was a free swarm and you have housed it, well your outlay is equipment/time/ and little else. Collection costs may well be mitigated by the person who called you out.
If you have raised them, then considerably more.
There are too many variables (in a purely business sense) to account for when working out costings. As far as £200.00 for some bees goes, thats the rough average I have seen as I look most days. £140.00 (internet), £180.00 4 lb of bees(a mate), up to over £380.00. (again internet), and I assume its roughly 4lb of bees each time.
We are our own worst enemies when we are idle. Good ideas clubs spring up and out of it a whole host of crap that hits everyone concerned. A pottering beekeeper does not need to be hit with the good ideas that commercial 300 colonies plus beekeepers can absorb. Because what you end up with there is the Tescoes versus farm shop senario. And then bees will be something that only the well off can afford.
If you want a good idea, get everyone who produces bees/queens/honey/hives etc to sign up to a review panel on this forum. Where everyone who experiences their products can star award them. Then at a glance we could see who sold reliable goods, products. The price could be determined by quality and reputation points. Like Fleebay. Feedback scores given once purchased. Then we would know who the rogues are and avoid. That would be a real service to new beeks like me, and bees alike. IMO. NOW thats is a good idea lol.