Photoblocks 18mm thick 25mm thick
6 x4in (150x100mm) £3.54 £5.54
7x5in (175x125mm) £4.80 £6.80
8x6in (200x150mm) £5.40 £7.40
10x8in (250x200mm) £7.80 £9.20
A4 (297x210mm) £9.00 £10.50
12x10in (300×250) £10.74 £12.60
16x12in (400×300) £16.20 £17.80
A3 (410x297mm) £18.30 £20.10
A3+ (475x325mm) £20.80 £21.80