Out of state turnkey is popular for the reasons you listed - your home market is overpriced and if you're going to go turnkey anyway, might as well do it in a market where your capital can go further.I always recommend that you make the trip to visit your top one or two choices for turnkey providers once you've done the legwork of narrowing down your choices.

The first purpose is to buy a house in a location where my kids have moved to and use "part time BNB and part time home for us"....There are other areas around this one that have more vacay spots and popular destinations. 

Many are well represented by sellers & turnkey operators here on BiggerPockets (myself included) The most popular markets are Cleveland (my stomping grounds)ToledoMemphisBirminghamKCIndyDetroitEach of these markets is popular with turnkey investors because of the low barrier to entry, high rental demand & high rent to price ratio.

At least you know you are dealing with a seller that is ready to sell.But I understand that there are sometimes properties that aren't listed accurately, and little gems can be uncovered... a popular example would be 2 bedrooms houses that have more than 2000 square feet. 

The Lahaina Beach House is a premier hostel and vacation rental located on popular Front Street located in Maui, Hawaii.

I checked and while USAA is popular for homes funded with VA loans it looks like you're free to choose a different company if you wanted to.I really just wanted to chime in to point out that, if you're using the regular RI Association of Realtors purchase and sale agreement then under the inspections clause (section 16 if you're using the most recent P&S) you have 10 business days after the effective date of the P&S (which is the latter of the buyer or seller signing), to back out for any reason and be able to get your deposit back.So this is a question you definitely want to resolve within that time frame.

So it was very popular and easy to rent.

Cleveland is one of the most popular investment destinations talked about on this site. 

If so, what’s a popular number?

@Gabriela Johnson it probably wouldn't be popular because it isn't more profitable than just owning the house, it is also somewhat complex and needs to be monitored.