Help Me Price - RT - RT Pro - Mini Mag Center Feed - Mini Mag Center Feed Polished

[digital sol]

Hello, would you be able to assist in pricing the following markers? I purchased these all at once recently as I wanted to build a mag and couldn't pass up the offer. Ultimately I think I am going to be building my own mag from scratch (aftermarket parts) so I will likely part ways with some of these but quite honestly am not sure on pricing. I haven't aired any of these up just yet but wanted to get an idea on pricing etc.

1) AGD Automag RT - Original box, includes barrel, VHS tape, printed instructions

2) AGD Automag RT Pro - Original box, includes barrel, VHS tape, printed instructions

3) Mini Mag Center Feed 'Grey' - No barrel included, as shown

4) Mini Mag Center Feed 'Polished'- No barrel included, as shown