Yes, price has a lot to do with it, I think. I strongly considered them, but decided that the 5 extra pax over the prop I went with was actually a deterrent as I expect to be using my props on some competitive routes and having the larger plane, even if just marginally larger, would make me less competitive in the market. My choice, the AN-140, carries 52 pax, and with the Motor-Sich power burns 680kg/hour of gas. At a lease of $126k a month, it is HALF the price of the similarly sized Dash 8-300 and ATR-42-500. Fuel would have to hit $1700/1000kgs for the cost savings to be negated. The AN-140 is available with PW power, but comes with price tag $5 million higher. Fuel would have to climb to nearly $1,200/1000kg to make the extra money worth it. MX costs are a bit higher than the ATR or Dash (by about $500 for an A, $1000 for a B, $50k for a C, and $300k for a D) but in the end, the AN-140 comes out cheaper than the rest to the tune of about $10,000,000 over the course of an 8 year lease, based on average fuel prices of $500/1000kg.