This is not really plausible way longterm. If you do the same transaction now, you get about 41 USD worth of ETH. Spending in shop gets you 50 USD worth of pigs. I know, that is in price tags, not saying you can sell that high but I take that over having 50 bucks on Ethereum facing USD 5 fee to move them.
We need to be able to move Grunts (or swap.grunts) on Hive Engine to facilitate transactions of this size. Ethereum is cool if you need a loan to buy a car, not for tossing a few pigs around.