I'm a member of their boards for resource purposes on my own swap, but I've never worked with them personally sorry. I did order my Fuel/water sep. through them off Ebay and they were really good to deal with in that respect. Their work putting the 1KD "D4D" engines into Tacos and 4Runners also looks near enough factory done that if you didn't know they never offered the engine in the USDM trucks you'd swear it came that way from the dealer.
I won't tell you that 28K isn't steep, that's for you to decide, but considering from your price description it sounds like you're going for a 1HD-X of some sort and a manual trans, I can tell you that that is NOT and easy engine/tranny combo to find (I'd be really interested to hear if they have one in stock and how long they quote you to start the process) in the US and really, these days, they're one of the only names in the game doing turn-key "all Toyota" conversions like this. Most others have shut down and sadly, the Toyota Diesel swapping market is not what it used to be several years ago. At this point, I'm not sure what other shop(s) is consistently taking on the Toy Diesels (read; has the engines/trannies and can get the parts needed to do the swap with the more complicated engines), and most all I know of at this point are shops doing the old 4BT swap into trucks here and there.
Out of curiosity, what chassis are you swapping the engine into and have you contacted them to see if they're "ready to go"???
Cheers
Dave