States have have a range of $2500 to $25000. Some states have no limits on eviction actions. Pro business states may be more friendly to small claims and pro-se actions. Small claims court won't hear libel, slander, professional malpractice, assigned claims, and punitive damages.
Some states allow waivers for small corps as defendants in small claims, while most large corps will use lawyers.
Generally it's wise to send an officious looking demand letter. Use a heavy bond paper and envelope. Include specific money demands. Send certified or other where a receipt is required. This will be required for your suit.
If no response you can move to filing the suit in small claims. Fees vary widely form state to state and county.
Some counties require you to put up a surety bond for the potential shortage between the value of the property levied by the sheriff and the claim amount. For a $10,000 claim the average sheriff surety bond is aprox $250. This practice seems very restrictive and punitive for the plaintiff.
Collection document example. Writ of fieri facias or FiFa https://www.loudoun.gov/DocumentCenter/View/129542/CC-1477-Writ-of-Fieri-Facias?bidId=
Theoretically states with higher small claims limits may be friendlier to the concept of pro-se.