I guess my question is whether you use fair market value of today, which is fairly low (you can find these items in certain flower stores), or if you use fair market value based on time/place I bought it.
If you payed more than the FMV
at the date of purchase, the extra is definitely deductible.
The question how to asses FMV on daled minim may apply to this:
Unusual Market Conditions
The sale price of the property itself in an arm's-length transaction in an open market is often the best evidence of its value. When you rely on sales of comparable property, the sales must have been made in an open market. If those sales were made in a market that was artificially supported or stimulated so as not to be truly representative, the prices at which the sales were made will not indicate the FMV.
For example, liquidation sale prices usually do not indicate the FMV. Also, sales of stock under unusual circumstances, such as sales of small lots, forced sales, and sales in a restricted market, may not represent the FMV.