Pre owned Blu-rays @ Cex online,
Priced from £0.50
Over 1000 titles to choose from £0.50 - £1.00
A further 1150 titles £1.50 - £2.00.
Delivery is £2.50 for up to 10 Blu-rays so it works cheapest if 10 purchased in one go.
I bought 80 so far:
All arrived quickly, some within 1 day, most 2 days, some 3 days.
All discs play well, even the "budget versions". All arrived in non-damaged boxes. Some came with a limited edition lenticular/3D covers.
There are also CineAsia movies available in the section "world blu rays" and some 100's of cartoons too!
If you know a cheaper/better place to buy-blu rays please let me know!
Happy watching :-)