Not really my field so I only post an answer as there is a time limit but the price, (assuming all were working properly), seems about right. On another day you may pay about that if you bought those as seperate items.
Large tube there though so for novelty value it's up there. Daguin has an, 'Epic Sale', thread somewhere and that features a large tube so check it out for comparison. I speak from limited knowledge here so consider that in your decision, (limited but not a total numpty!). I'd like to see some better photos though. It doesn't seem the seller really knows what info a buyer would like. No mW, no beam, manufacturer etc., although the stickers may not show this info.
Hopefully someone with more knowledge will be able to post before the sale closes.
If you do go for it then I'd like to see your thoughts when the gear arrives.
Good luck,
M
[edit] There you go. As soon as I post then the seller comes on... All working is good! Maybe the following conversation will answer all your questions. (And the sale seems to be for a good cause. Hope you find something soon xXAxHillbillyXx)