It was actually pretty good really.. it was £295.
Proton packs normally go for £500-£900 depending on the kit/materials used.
This one wasn't attracting many bids, I think because the description was really vague and brief. You couldn't tell what it was made of, whether it was fibreglass, resin, wood, or even EVA Foam.
I took a punt on it as it had all the right parts in the right places more or less, and it has the backpack frame (the Alice LC2).
It's pretty solid, it turns out it's a homemade wood kit, but it has some wonky bits that need tightening or replacing, but I'm over the moon with it
Just need to figure out soldering a light and sound kit now.