Only the EXT Pro, the Pro TS and the E-force come with a PE regulator. Having said that, the Pro TS and the E-force both sell for $199 online at the moment, so you won't get more than the second-hand value of one of those (not counting the vaue of the barrel and the grips.) Let's see:
Marker: $199
Barrel: $40
Grips: $20
Total: $259
2nd hand value: maybe $200?
Marker: $199
Barrel: $40
Grips: $20
Total: $259
2nd hand value: maybe $200?