yes, be careful, if the convenient store can earn $100000 per year, why they want to sell it. I knew a Korea man who brought a photo shop when he just arrived Toronto and a agent sold the store to him, the agent said the samething: " earn &100000 per year". the result was that the Korea man did not earn any money from the store. in contrast, he lose money by the store every month because he still has to pay mantain fee and land tax . so please do some investigation before you decide to buy the store, at least ask the owner to show you tax reciept. if the store can earn $100000 per year, they need pay tax which will be the evidence that the store can really earn money. do not believe any word if you can not get evidence from them. the saler always has reasons not to show you evidence. also, you can go to the store without informing the agent or the owner, just as a consumer to take a look how the busyness looks like