Here it is, cheap recipe to get to 250

[Proctus]

Spirit of Sloth.

Etherael Suspension (2p 6g 2s 4c)
Sealed Poison Vial (6p 3g)
Creeper Ivy x 2 (1p 2g 5s 9c)
You get the Poison vial back on a failure.
Poison sells back for (5p 1g 8s 7c)

So, grand total per combine
Success (6p 2g 2s 5c after sell back)
Failure (5p, 1g, 4s, 2c)

all purchaseable in PoK in same room.

[dorkbot]

You are Correct!

You are indeed Correct. Spirit of Sloth is the Most Cost Effective way of Increasing ones Poison all the way to the almighty 50. Nice poison for Older world mobs, Anything Modern day is probably going to resist it unfortunately. Also unlike POP Poisons, You can NOT combine the bottles in to 10 shot doses. So you will have Slot after slot filled with this Poison. Another way to help reduce the cost is to make your own poison. This can be done with a Vendor Bought item calls Crow's Brew.(sold in Absymal Sea plus a VERY limited Quantity sold in Qeynos(at Crow's bar strangely enough)) This will help offset the cost of the poison as well. You have found out what a lot of other rogues have as well. Take a Look. Almost every Poison Vendor has Spirit of Sloth on them as someone was doing his combines to Increase his skill. What you SHOULD do is keep track how much you are spending. It Might be more cost effective to Just Use the Points and Pay the GM to train you to 250... Just a though