IMO The Chap is arguably contributing in two ways:

1. By paying a subsciption (yes, mine has lapsed and will be renewed soon!)
2. By offering an item for sale which is very possibly of interest to memebers of this forum

Personally I dont have an issue with a subscribing 'stranger' offering relevant items. If he was selling pixel cases with links to his ebay 'Inkjetorama' store that would be different. A Berlebach tripod is very APUG! I have two.