Sellers postage exceeds amount charged to myself....do I send difference back to them?

[SodaStreamy]

Recently purchased a DVD boxset and postage charged was £2.25.

It arrived this morning and is stamped at postage being £6.50

I'm new to ebay so I'm unsure what the accepted protocol is.

I've not received any communication from Seller so is it normal practice to contact them and paypal them the difference?

Nope you don't have to pay them anything, if a seller miscalculates their postage it is their mistake (I've done it myself and just taken the hit) the buyer isn't obliged to pay the difference.

What DiscoDonkey said. It's happened to me too, as the seller. Seller must be cursing themselves and their scales. If you're planning to buy more stuff from them it might be a nice gesture to offer the difference (and maybe get a discount from them next time) but TBH I wouldn't bother.

Different matter if you're the seller though. It's good practice to refund the difference, especially if it's a reasonably large amount like yours.

Thanks.

I suppose I'm just worrying that they might be selling stuff for financial reasons and I'm leaving them out of pocket.

Well you are very kind and thoughtful if you feel the item is still worth the extra £4.25 then you could make the gesture of making up the difference.

Nice if you do make it up, no onus on you to be nice.