What were you doing with the equipment between July 2019 and January 2021? If it was being used by you personally, then it is not a deductible start up cost for your business. Instead, you can list it as a business asset and begin taking a deduction for depreciation as of the date it is placed in service for the business. The basis of deprecation is the cost you paid or the present fair market value, whichever is lower (and the value of used equipment will almost always be lower than the purchase price.)
If the equipment was in storage for the business and not being used, then whatever guidance @tagteam found is probably applicable.
