That's great, but also bad...
It's great because PTE stuff is A) Underrated in terms of quality. Seriously, it's maybe a knock-off toy, but the quality is superior to a lot of half-assed knock-off toys out there.
It's great because PTE stuff B) Flies under people's radars a lot of the time. It's just not got a lot of exposure unless you're poor like me and frequent Big Lots.
But it's bad because (and I say this without trying to disparage a sponsor), their prices are kind of goofy on some of their stuff they're pre-ordering. The tanks, choppers... Not good prices on some of that.
Big Lots orders PTE every year, so does J.C. Penney (check their catalog online, they have TONS of good stuff and often run sales making it great prices usually for what all you get in these big sets they sell), and BBTS will have a rough time competing price-wise with these outlets for PTE goodness.
Likewise, if you want just some random bits from a set, you can buy from Maraunder Inc., which sells individual bits and pieces for fair prices... Not sure how/where they get their supply, but I believe it's from manufacturers and not a middle-man type deal. I could be wrong, but don't believe I am.
Some of those are great pieces though on BBTS and if you're having trouble tracking down the Chinese tank, or the Chinese IFV (Seriously, they're Chinese... that's awesome in and of itself, and both are fairly well scaled 1:18 items! The Abrams is a bit undersized for the scale), then they're good sources... But Like I said, I have a Big Lots every couple feet and they're all pretty solidly stocked this year...
What's great about PTE also is they shock you with new ****. The Chinese stuff came out of left field... this year's mini-bunker and wall sets in the "mid-size playset" series were out of left field too. They've done tan towers now as well, unexpectedly, and I believe one has a peaked roof to it in the one JC Penney set which is odd.
There was a company called "Eversparkle" that did a set, sort of like PTE but cooler. I need to snap pictures of this thing. People will collectively poop themselves and wish they'd had somethign similar with a sci-fi theme (leaving "Star Wars" off it, but clearly as its intent). It's awesomeness and inexpensive all rolled into one. I only wish I had more of this playset. It was my initial inspiration for some custom ideas i've had for Star Wars stuff, many years ago.