Starting next July, eBay (EBAY) will no longer let Google (GOOG) provide transaction checkout services on eBay Web sites. It won’t allow any checkout service except its own PayPal-featured service. EBay’s instituting the new policy “to give eBay buyers a consistent, speedy checkout experience and to ensure support for fast-growing sales via mobile platforms...,” Todd Lutwak, eBay’s vice president of the seller experience, wrote in a little-noticed blog post last week. “It’s certainly an attempt to get more revenue through PayPal and direct people to PayPal,” said Beth Robertson, director of payments research for Javelin Strategy & Research.