Wiith the transfer merry-go-round already having started with Liverpool and Manchester United both having secured big-money signings this month, Pulis believes this will have a knock-on effect on the other clubs in the Premier League and see a number of big-money deals completed.
The only player movement at the Britannia Stadium so far this summer has seen Abdoulaye Faye and Eidur Gudjohnsen both leave after being released but the Potters boss doesn't expect this to be the case for very long.
He said: "It's going to be an active market and an expensive market this year.
"The top six clubs are all looking to spend. That always filters through.
"Sunderland have sold big, Blackburn have sold big, and there will be other clubs who will have a little bit of money in their pockets to go out and buy players.
"I expect it to be a very difficult market but a market where there will be a lot of movement."
Stoke have been linked with summer moves for Blackpool striker DJ Campbell and Birmingham centre-half Scott Dann.
However, Pulis has played down reports midfielder Glenn Whelan is one of the players he would be willing to cash in on.