The run was cancelled due to lack of interest, and if it wasn't going to be financially viable to set everything up then they're within their rights to pull it. It's not about forcing people to buy the more expensive one, if they wanted to do that they wouldn't have ever even offered the standard version in the first place. They offered it, and clearly it wasn't as 'desired' as both they, and some in the community thought it would be. They've had to drop products for lack of interest before (an imperial officer variant I believe) so it's not unheard of.
People who had already ordered the standard are being given the option of a refund or a $260 upgrade to the premier version, which puts it close to tier 1 pricing. With the coupon from celebration that gets the price down closer to $500 which is a steal given what people are paying for modded black series helmets (upwards of $300) or for something like an adil ($400 unfinished, and as high as $800-900 for a professionally finished one), neither of which will ever be as accurate.
I get that it's not an ideal situation, but they've explained why it happened and offered options to the affected customers that are more than reasonable, so it is what it is.