What should I ask the seller for?

What you get. Answer 6 short questions about your situation and get a personalised list drawn from 18 possible documents, each with a one-line reason it is on the list. The list can include: Financial statements for the last three fiscal years and year-to-date; Corporate tax returns and notices of assessment; HST returns; payroll remittance history; Twelve months of bank and merchant processing statements; Aged accounts receivable and payable, and a current inventory list; Minute book, articles, share register and any shareholder agreement; List of every asset to be purchased with serial numbers, and any equipment leases; Personal Property Security Act search results and payout letters for each registration; The commercial lease, every amendment, and the landlord's consent requirements.