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I maintained page like this, only to have it penalized by Google when they started cracking down on a particular type of SEO spam.

But another problem is that such pages are just really hard to maintain. In a year or two, half of the items you're liking to are going to be out of production. This is especially true for stuff like no-name test equipment, low-cost breadboards, etc. There's just no stable brand or URL to use.