Colleagues recommended me a platform for buying a house called Group Room Baby, saying that it can save money. Is it credible?

If you don't trust your colleagues, then you can look at the house through this platform to see if it is too different from the actual price, and then decide whether to buy it on this platform. In fact, you can look at the house first, look at the price of the house first, then compare the prices on this platform, and finally make a decision. Don't pay first, then decide later.