Costs vary so much from shop to shop and town to town. Alot of the costs will be unknown until you decide on the shop.

I did a business course before opening which helped greatly.

When I open (10 years ago) it cost me about 5000 pounds, this covered rental deposits, basic shelving and stands, flooring, till, phone etc, sundries items and my 1st lot of fresh flowers. I had 200 pound left in the bank EEK (it was very scary stuff)!!!!

Hope this Helps