The spec looks reasonable and the price is about right. It may be another import of this Made-in-China compressor.
Model Expo is an established online vendor. You can expect good after sales service from them. There are few report on their compressors yet. But this unit looks very similar to the Airbrush-Depot TC-20T compressor in spec and appearance.
What is the "brand new compressor" that you already have? Most of the low cost airbrush compressors sold around the world are either made by Sparmax in Taiwan or various factories in China. I like the Sparmax compressors because of their established track record. Sparmax used to make the compressors for Iwata, Paasche, among others. But it may have changed now. Many US dealers are switching to Chinese manufacturers for the lower end models. You can tell because the Chinese makers double the horsepower quote (but not more powerful motor) for similar compressor. For example, a single piston compressor is 1/8 HP from Taiwan and 1/5 HP from China. Similarly, twin piston compressors are 1/6 vs. 1/3 HP.
When you take the compressor home, check how quiet it is. A quiet running compressor is usually a sign of quality made. You should be able to talk to your family and friends in normal voice when the compressor is running. Normal conversation in home or office is about 65 dB. So the compressor noise should be -6 dB down or about 59 dB or lower. You can still hear it, but it is not distributing to you. Return the compressor if it is noisy or it gets too hot to fill the tank before stopping. You should be able to keep your hand on the compressor cylinder when it is done filling, which should not take more than a few minutes at starting. A powerful motor and a cool cylinder is another sign of quality.
Come back in 6 months to tell us if you keep and are still happy with the compressor. Good luck shopping.