My 2p worth
Pictures and details will help volumes. Nobody will want to part with £1500 without knowing what’s there.
I’ve bought quite a few job lots of items before. Joblot prices are around 10-20% of the value ti sell on as a rule. I can’t tell you if your price is high or not as I’ve no idea what’s included but I’m sure 20 mins of your time will add up a realistic total to give you a idea if you are realistic as a joblot price.
I’ve been offered many job lots where the seller has simply added up the items at eBay prices and wants that amount.