You can literally just wish for that amount so could cast this every other day if you have access to both spells since the monetary use of wish is covered under the effects not at risk of losing the spell.

Last Lines of Wish
"The stress of casting this spell to produce any effect other than duplicating another spell weakens you. After enduring that stress, each time you cast a spell until you finish a long rest, you take 1d10 necrotic damage per level of that spell. This damage can't be reduced or prevented in any way. In addition, your Strength drops to 3, if it isn't 3 or lower already, for 2d4 days. For each of those days that you spend resting and doing nothing more than light activity, your remaining recovery time decreases by 2 days. Finally, there is a 33 percent chance that you are unable to cast wish ever again if you suffer this stress."

The making an object worth 25k gold is NOT duplicating another spell

"Alternatively, you can create one of the following effects of your choice: You create one object of up to 25,000 gp in value that isn't a magic item. The object can be no more than 300 feet in any dimension, and it appears in an unoccupied space you can see on the ground.  "

No,  has to be old age