I really think that internet ability lacks More buyable items due to how creative and good the ability is.
Farmer crop. Pack box: this consist of Farmer crops that are eatable only ,such as Potato,Bread,Rice ,it's a way for the user to eat and heal (3 rice,3 potato,3 bread) which cost roundly 600 dollars - 2000 dollars depending on what's more reasonable. (Watermelon,carrots and corn cannot be added only crops that are eatable.)
Dynamite: this is a dynamite from the bomb mastery,it has a wind up animation of 2 seconds (lighting the Dynamite before throwing it) ,it cost around 2-5k dollars dealing 20 dmg total.
Chocolate bar: this chocolate bar briefly increase your speed into a unmas alchemist speed potion for 10 seconds,in exchange for those buff it makes your screen Unstable like in a sugar rush. (Heals 15 HP) At a cost of 10k dollars.
Here's the cooldown of each items.
Farmer crop box: 40 seconds
Dynamite: 75 seconds
Chocolate bar: 70 seconds.