It depends, highest prices tend to go on ebay with good detailed photos, some for insane prices. I have been watching ebay for the last few of months since buying my '74 Raleigh Sports, I paid $150 for it, which may have been too much, but it is in very good condition ( a few very small specks of surface rust and a couple of small paint chips otherwise near mint). In my observation of ebay bicycles auctions (and most all ebay auctions) timing and luck are important, pick a listing/ending time when the most people can take part, I think sunday evenings work well, if your auction ends at 4 am or even during the work day, you stand little chance to getting into a bidding frenzy. The Raleigh sports model had a very long production life, and there is a certain level of increased value relative to condition with the older models, on a more general note you can expect rideable mens bikes in ok to good shape selling for $75-100, those in great shape, but not mint seem to be selling for $150-350 with most ending in the $150-200 range, there have also been some new in the box 1970's Raleigh Sports selling on ebay for $500-600.

p.s. these prices are for mens models, womens tend to be much less