There's a pattern if you pay attention, especially if you're eyeing Steam. Most unfinished/EA games on Steam are in the ballpark of $8-$10, whereas a finished/completed game (or a Season/Book 1) will be in the ballpark of $13.99/$14.99, depending on the amount of content featured.
Patreon is a little more varied from dev to dev. I've been complimented a fair bit on my release pattern for Patreon tiers, which are staggered weekly releases per tier throughout the month. Highest tier ($75+) get it a month early, then a week later the next tier(s) get it, and so forth until the public release hits near the end of that month. Not only does that give me time to fix bugs that pop up or edit missed types, or anything of that nature, it allows people to support at what they can afford while not being entirely cut off from the benefits of each tier.
Edit: Only offer the $1 tier as a tip jar on Patreon/SS, no benefits beyond wallpapers or maybe polls. Reason being that by the time Patreon takes their cut, you're seeing very little of it. Add PayPal's fees to that and you're looking at next to nothing.