Pimoroni (https://shop.pimoroni.com/search?type=product&q=pi+zero) are running a promotion this weekend, with 15% off goods (not P&P) and they still have Pi Zero's in stock !!!
The promo code is HELLYEAH (they prompt you to enter it at checkout ..)
NB. no I don't suggest you pay over the odds for their 'starter kits' or 'adapter kits' (or indeed anything else), however you can't get the basic Pi Zero cheaper, plus these guys seem to be the only ones with a Pi Zero camera cable (for which they rip you off a monopolistic £4)