I bought some a while back when they were at like $7.50 or something per strip, but now they are priced at $2 a strip (at least for the time being). I had to pay some tariff fees, so it's a little more than just strip price+shipping though. I know the 4k may not be ideal for full cycle type situations, but seems feasible to put together a cheap veg light with them or add some kind of supplements for a more full cycle type light.
Hope this helps someone out and take care everyone.