I'm tring to set up a tell trigger that will display something I see on my screen with an alias. The alias is really just a shortcut to see one item in my rift, tell me how many I have for sale and remind me of the price.

It looks like this:
#alias irjun
#echo ""
#echo Juniper %eval( @rift_count.juniper-@goods_reserve.juniper) Price @goods_price.juniper

I see: Juniper 800 Price 9

I cant seem to find the command to go in the trigger that will return a reply showing the same. Any help?

Trigger would be off of something like: Shiloh tells you "Juniper."

#tr {(%w) tells you, "(%w)."} {tell %1 %2: %eval(@rift_count.%2 - @goods_reserve.%2) Price: @goods_price.%2}

If course, if someone tells you "Yes." you'll get it answering as if Yes were an herb, so you might want to add some conditional logic like this:

#tr {(%w) tells you, "(%w)."} {#if (%number(@rift_count.%2) > 0) {tell %1 %2: %eval(@rift_count.%2 - @goods_reserve.%2) Price: @goods_price.%2}}

It'd be better to do this using a listvar of herbs or something, but I'm trying to work with the data you already have.

Be careful, though, as triggers like that are easily abused. I've always preferred to keep it a little more IC and actually have conversations with people about the prices and quantities, though posting an ad never hurts.