OK so after spending a fair amount of time on these forums I've come to the conclusion that whilst I love Lego, reselling it isn't for me.
My wife and I started a reselling business (part-time) to help increase our income and we've been selling all sorts of stock from Boot sales, Facebook Marketplace, Charity Shops and our own personal items. I wanted to branch out into other areas, Lego was appealing to me because I loved it as a kid and I like the idea of investing on something for the future.
The thing is, why would we invest our money into something which after 2 years might give us a 100% profit, when every £1 we're putting into our current reselling business is on average giving us £2 back and usually within 30 days.
Our reselling business is a lot more work but I'm not patient enough to sit on £500 of Lego for two years and to slowly build up a level of stock without knowing if this is going to be profitable or not.
I've cancelled my Asda order from yesterday but I'm planning on keeping 2 x Yellow Subs a Catamaran and Stephanie's house which I will either shift for very small profit on ebay or try to shift on Facebook Market place before Christmas.
I will still lurk about a bit on here but I think I'm happy with our current business model for now, if I see some good sets discounted after Christmas then I may have another look but for now I'm not in a position to wait two years to start getting some returns back on these sets.
Thanks to you all for helping me out and I hope the sets you've all invested in do work out for you all.