GPS is a crap outfit. I have never personally met, or talked with, or emailed anyone who worked with them. Just another bunch of wankers trying to be a contract agency.
I just did look them up, for the first time. It said that a 330 CCQ upgrade, "was possible" after the first 3 year contract is completed on the 320.
I repeat, Tianjin just received their first, and only, 320 a few weeks ago, outfitted the interior in Haikhou, and is just now flying it, with our assistance.
330's? BCA told us 2 years ago we were getting 330's "next year". Near as I can tell we are still flying rubber dog**** in and out of PEK, SYX, Xian, and CAN on 319's and 20's. No 330's in sight.
GPS is trying to hold a carrot in front of somebody to get them to bite. Look at a reputable agent, like Parc, who also recruit for Tianjin. They don't advertise this.
I would avoid GPS.