I recently bought this to put on to my PTW but a friend was selling his Aimpoint T1 at such a good price that the Vortex is no surplus to requirements. 
 

This is a genuine Vortex and is still sealed. I’m happy to open it and let any potential buyers know the serial number if they want to check its authenticity with Vortex directly. 
 

The cheapest I have seen online is £160 so I feel that the £110 that I’m looking (inclusive of fees) is very reasonable. The warranty is on the optic and not the original purchaser so any issues you ever have (including it being smashed) will be sorted free of charge by vortex.