PSA to miners: Bombs are only 20c each in the store because if you want convenience, you have to pay a lot extra. This does not mean bombs are now worth 20c each, and I am not going to pay you 20c per bomb you craft for sale. The extra price is for convenience; bombs are still only worth about 6-10c each.
Same goes for fadey foam. It's 5c each in the store because it's convenient, not because that is now the normal price to sell it for. The price is still 1-2c each.
Not saying you can't sell the items for that, but the fact that they are more in the store does not mean they're worth more when crafted to sell. You won't get much business selling them like that :)