Yeah, when (or if) I do get round to selling my ps1 games I'll be doing a few at a time rather than all at once.
Bought loads of bubble-wrap and padded envelopes late last year (you'll recall ps1 game cases are a lot more fragile than current gen game cases), but haven't made a start on selling them yet.
Most are only worth about £2-£4, but it all adds up - and the Final Fantasy and X:Com games are worth a decent amount.
Haven't checked the going rate since last year, but I imagine they're largely unchanged.
Would definitely rather have £100 in my arse pocket than those games sat on my shelf...