7 off 6mm    20p

5 off 8mm    20p

10 off 6ba   20p

5 off 10mm  20p

10 off 4ba   20p

8 off 6ba, 4ba, 2ba    48p

10 off 2ba   20p

10 off 2ba, 4ba, 6ba, 4 off 6mm, 5 off 8mm, 2 off 10mm    £1.00p

5 off 6mm, 8mm, 4 off 10mm  50p