This price jump makes me much less likely to purchase a custom suit from SuitSupply. For certain mid-range fabrics, their price for machine-made full canvas suits starts to approach Divij's handmade suits. Divij would be a much better bargain at that price.
But SuitSupply does have the convenience of the number of stores and generally good customer service. For most customers (including all the wedding parties that must be swarming their stores), that's hard to beat.
However, to be entirely fair to SuitSupply, I don't think that private enterprises are under any obligation to explain their pricing strategies to their customers. Also, to your point about gas and cereal prices rising 50%, those are necessities. Not a fair comparison, for I doubt that even the most fashion forward person would argue that a custom suit is a necessity.
I was the one who first compared the prices of cereal, gas, and suits. It indeed does not make much sense to compare essential goods to custom made suits. Yet, I still think that SuSu response with regard to their price increase does not make much sense.
The main issue is that they lied saying that their products and fabric offering have improved, which is not the case. If they didn't want to communicate about it, they should've found another way to respond to my enquiry, but misleading loyal clients about the "improved" quality of their offerings is remarkably stupid from a PR/Comms standpoint.