Vette's right about the values and rarity, assuming the drums are in great shape. Imperialstar was probably the most common line because it was pretty much the entry line. Equivalent to the Pearl Export series of the 80s. Later the Rockstar DX was sort-of the Pearl Export equivalent. As far as the seller being the average un-informed seller, or the other type Jonni mentioned, the guy looking for a fool, I think he's the latter, based on some of the evidence: 1) He's selling more than one set 2) He's not including cymbals or snare drum with the Tamas 3) based on one and two he probably knows the value of the Imperialstars he's selling and is intentionally over-pricing.

The reason I suggest you go look and bring no money is because that's the only way you will really educate yourself about the market. It would take time but you'll be rewarded in the long run when you're really ready to buy.

As far as Tamas go, the typical good deal on a set of 80s Tamas is usually a set of Superstars. They're not as common as the Imperialstars but they do show up from time to time, but the prices of them are more wide-ranging, usually, again depending on the knowledge and degree of determination the seller has in getting top dollar.

The Imperialstar snare drums are indeed a more valuable item and they sound really good.

I've always been impressed with Tama quality and their hardware is really nice and sturdy. The 80s was when the big three Japanese makers came in and started taking the drum market over from the failing and ailing USA companies.

This website is great for information but when it comes to shelling out cash I tend to rely on personal experience in conjunction with the info obtained here and elsewhere. That way I feel like I earned the good deal when I stumble upon it. The market fluctuates some over time so I feel the greatest value is in the drum identification area.