I've been using Seed golf balls for the last couple of years, so it was difficult to turn this offer down when an e-mail arrived earlier today - 50s or 100s of their SD-01 model (the one that I use) with minor printing imperfections for a fairly significant discount over normal pricing (£69 for 50 or £125 for 100 on this offer, compared to £25 per dozen on subscription).
I've ordered a batch of 100, so should have enough balls to last me well into next year...