11.   ... the seller has a substantial physical presence in the state.

12.   A seller has no obligation to accept anything less than the listed price.

13.   Across this region, inventories of high-end houses are rising and some sellers are having to trim their asking prices.

14.   Buyers were given an upper spending limit, while sellers had a minimum sale price.

15.   Buyers are betting on a longer economic slump in which sellers will eventually have to accept lower prices, Hyland said.

16.   Electronic marketplaces need well-known vendors like Staples, but those sellers have a fair share of clout.

17.   For instance, because prices are often signals of quality, sellers may have a disincentive to post low prices.

18.   For instance, there is no rule against a seller getting in touch with auction losers to make separate deals if the seller has multiple copies of an item.

19.   He opposes any attempt by the states to tax Internet sales unless the seller has a substantial physical presence in the state.

20.   High-priced sellers have either to meet the competition or go out of business.