Oh, I just realised most of your items are pick-up only. So, the rules are:

1) No paypal for pick up. Cash on collection only.

2) You immediately lose all seller protection by not accepting paypal- c'est la vie, but it works just fine provided the buyer inspects, agrees and pays in cash as they collect.

3) Legality doesn't immediately come into it- you're not acting illegally by listing on 2 sites- you could list on 20 selling mediums if you had them. Legality rears its head only when things go bad- and they won't if you're careful. Eg- don't dangle 2 buyers at once etc.

I'd list these items on both ebay/gumtree. Yes, use BIN not auction. If it sells on one pull the ad off the other. QS has such low selling rates I wouldn't bother, it's just more admin for no return.

Sounds like you've a fair task ahead of you... enjoy and good luck again 🙂