I'm strictly free-to-play on Arena for a few reasons, which is to say yes, I draft less often than I would like to. Basically I play Standard to build up gold until I can afford to do a draft. Unfortunately I'm liking Standard less these days -- probably because they expended the number of sets -- so I'm not sure if my patience for that arrangement will last. Would be nice if they added Pauper or phantom drafts/sealed on a permanent basis, but I don't know how likely that is.
The good news is that the booster price increase doesn't seem to have affected the Arena economy. And I did just buy a Play booster box of MKM from my LGS, and the price hadn't gone up as much as I'd anticipated.
Thanks guys. The link I originally posted still works for me, so I don't know what the deal is, but I replaced it with this one, which also seems to work for me. If it still doesn't work for anyone, you could also try: https://survey.marketpointsinc.com/wc0224gb1/WIZARDS