Thanks for all your responses and comments.
Not really slept, spent the night telling myself to "Man the ^&*% Up".
Just to explain as I was not very clear in my posts. We had viewed the premises and were in discussion with the owner via the letting agency. Our town centre has a large supermarket that actually owns the lease for all the little shops around it, they are currently trying to promote local small businesses so the terms are "easy in and out". Even so, we were a little wary because it was in a bit of state. Although in hindsight, the shop is in a very poor location with no daytime footfall, this particular row of shops is not retail, just takeaways. It is all a bit takeaway odours really.
We felt that because of the amount of work, we wanted to get the quotes before we actually signed. It was a takeaway (not a restaurant), so if you can imagine there was the shop door, then the seating area for those waiting for food, the desk where you would order. It was all very 80s, very dirty, little bits of damp. The kitchen and venting needed to be stripped out and we were going to turn into a small office space with stock storage.
I approached him because I know he has done a lot of shop fitting and he could do everything rather than getting three or four trades in. My sister and I wanted to get the quote to know exactly what our start-up costs would be, we did not want any nasty surprises. How ironic is that?
I was sent PMs by three people who have collected items from my house and recognised the layout and my style of photo. I think they were in as much shock as I was, the original post about the opening of the shop was put up at just gone six, I was alerted by my daughter of its existence just before seven. By the time I had logged in (I was painting a couple of orders) it was half past seven and I had already received two PMs.
I have to move on from this as soon as possible, I have not really slept last night because I have to move on this incredibly fast.
My sister is no longer interested in moving forward with any type of project, I can understand her logic, that if we were to open something similar we would be seen as imitating them. I have to respect her decision.
I am unsure what stock she is going to open the store with, she could have spent the last month or so duplicating my entire collection. I have no way of knowing until she opens the doors on her "opening day".
This is the way I have decided to proceed, I have craft stalls booked between September and Xmas, in addition I have retail space booked. Between this and my online sales I will try and sell as much as I can as soon as possible. I will be selling off my furniture and projects, as quickly as possible, ditto the paint.
Hopefully I can make it through the Xmas season as a viable business, fingers crossed.
Sorry if the NC sounded a bit "Voldemort", not intentional but I won't be posting under this name again anyway.
Thank you all so much for your support.