Hi Patrick,
I buy all types of titles, including those for aircraft. I probably due to more sales on aircraft titles, actually. I'm more of an armor guy myself, always messed up the aircraft canopies with glue as a kid so kinda hard to get past that!
If you're interested I could definitely swing by and take a look at your books, no obligation or anything. I'm new to IPMS so would be great to meet another local member, too.