Terry,
Panthip Plaza on the ground floor, I have seen a retailer with a mass of telescopes and a few microscopes. All sizes and variations from 3k to 50k Bhat. They will negotiate, one telescope priced at 35k was offered to me for 28K.
All the bits and pieces to go with them as well; software for maps with a diary to show what celestial events are happening, when and where; you can get attachments for cameras and all manner of extras.
The only other place I have seen them is Central Plaza but at nearly twice the price for the same or similar.
