Research comparable listings
Before setting a price, browse the top results in your category and note where they cluster. Price against the products yours will sit next to, not against what you think the work is worth in isolation.
Licence tiers
You can enable more than one licence tier per product and price each separately — Personal, Commercial and Extended Commercial for most categories, four use-based tiers for fonts. The cheapest tier becomes the listing price, so a low Personal price gets people in and the Commercial tier carries the margin.
Launch pricing
A coupon code from Dashboard → Coupons gives a short launch discount without changing the list price. Codes are limited to your own products, can expire on a date, and can be capped at a number of uses.
When to raise prices
Once a listing has a few reviews, try a modest increase and watch the sales count in your dashboard for a couple of weeks. Buyers who follow your shop are told about price drops, not rises, so a rise is quiet.