Classic equipment such as these Dyna's command very high prices in Asia due primarily to their classic status and collectabilty. The Mk III's can sound pretty good particularly after updating. But, $3000?! I don't think so. Way too much, in my opinion.
Before Dyna, before Dynakit, the company manufactured transformers. They realized that between the Output and Power transformers they had most of the parts value of an amp. So, they put out the amp kits.
I think the 60 watt monoblock was over $120 when the rule of thumb was a dollar a watt.
I'd have to agree that $3K is high, for a pair of Dyna Mk III's. A really nice(operational and stock) pair, might bring around a grand on eBay. Matter of fact: (http://www.ebay.com/itm/Dynaco-MKIII-tube-amplifiers-pair-sequential-serial-numbers-s-n-tags-on-100-v-g-/110835587093?pt=Vintage_Electronics_R2&hash=item19ce50d815)
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