Solar light post with reflective address number?

Question:Where can I find one of these posts?

http://cgi.ebay.com/ws/ebayisapi.dll?vie...

Answers:
the link you provide shows a custom-made unit, which I interpret as the seller is making and selling his/her own products.

if you want some type of 'Solar Light Post', that item is manufactered by several companies. Below are a few links.

Higher end units:
http://www.solarlightstore.com/solar-spe...
http://store.irawoodinc.com/br82sowhledg...

Mid-priced units: http://www.etoplighting.com/solarlights/...