I posted queries about the pay as you go lounges at Toronto Pearson some time ago, and, last week, I did use the lounge. Here is some information for others who may be interested, especially if spending 3 hours waiting for a flight. The KLM Lounge is by gate 32 in Terminal 3. The cost to use it is $25 (cash only) and it is not necessary to book ahead except for busy times such as holidays. There are comfortable chairs and tables. Snacks included two kinds of soup, a variety of samosas, packets of biscuits and crackers, fresh fruit. There were two "house" wines, a red and a white as well as a variety of spirits and beers. The fridge held water, juices and soft drinks. All in all, it was money well spent and I'd certainly pay to do it again when traveling economy.