When the price of a runner shortens they also maintain the original price for quite some time on the website. You get offered the lower price, you decline, you refresh, still the higher price, 15 seconds later price changes.
Had a horse ease from $15 to $16 - immediately tried to place a bet - was offered $14 - then eventually went to $14 on website.
They are clearly enticing people to bet with a higher price hoping they will just accept the lower price when offered.
But I really think they hit a new low today when they offered $61 the win and $12 to run first or second about Royal Popcorn throughout betting.