Yes!  This is easily done.  Here is how it works.
Find the direct equivalent to your old cartridge in the current range,   note down the price and the available trade in discount amount.
You can then deduct that amount from the price of any cartridge higher in the range.
For older and more obscure Dynavector cartridge models, see our FAQ on Dynavector Trade In.
As of April 2023 we have managed to get the Dynavector cartridge pages to list and work out the trade in pricing directly - see the drop-down list boxes.
An example will make it clearer:
Say you have a 30 year old 20B2 cartridge that the cat has mangled.  The current equivalent model is a DV-10X5 mkII, the price in April 2023 is $1,149.00 and the trade in discount is $222.00
So a brand new 10X5 mkII  will be 1,149 less 222.00  =    927.00.
If you wish to upgrade, you may deduct $222.00 from any other cartridge in the range.