According to the Account Worth page, I have 23 unpriceable items, most of which are CWs, then it would be at 50 million.

But I'd give it to None in shops, none in trades.

Of my items that can be priced, the most costly one is

@ 49,989,999 sP

But I have about 25 CWs/MCs that can't be priced. So I think my real most expensive one would have to be one of those.

Empty Champagne Bottle @ 45,000,000

My most expensive item is: Rumpus-Ready Plushie @ 25,247,217 sP

God help me it's the Turds Conversation Heart Beanbag @ 23,999,999 sP in my beanbag collection >_<

irony of ironies that the prize for a wardrobe full of expensive wearables is....an expensive wearable. oddly enough i care for it more as a food than a wear, but alas it is in my wardrobe.

Malice @ 50,000,000

Although honestly, I think it is probably one of my weapons.

The items listed in my Account Worth page are horribly inaccurate. It claims: @ 25,000,000 sP (really like 18m?)

Really, it's probably

1x: Chancellors War Shield @ 50,000,000 sP 1x: Green Ghost Plushie @ 50,000,000 sP

a weapon and a plushie

I Heart You T-shirt @ 19,500,000 sP (which is in my shop for 3.3mil right now)
10th Anniversary Recycle Beast Cake @ 6,666,666 sP

1x: Easy Assemble Tent @ 50,000,000 sp.. I'm actually surprised about that one. 1x: Perfect Peacock Fabric @ 36,616,333 sP. So yeah both cash shop items xD

According to the account worth tool it is my 20 Percent Discount Card @ 38,600,111 sP, but it doesn't always seem accurate

Jolly Roger Blade

i sold my more expensive items a while back, i just wanted the money.XD

Green Ghost Plushie @ 50,000,000 sP

edit: oops double post.... don't know how I did that...

1x: Antique Haunted Drape @ 23,998,000 sP

Dog tags apparently?

Decadent Strawberry Blondie Cake Intricate Energized Helmet Box of Magical Misfits Captain Jacques Bobblehead Kahaleitzli Bobblehead Ignitious Gelatin Slayer are all rated at 50M, but my 30% discount card cost me 150M

These items are priceless:

1x: Soft Classy Curls 1x: LairBear Companion 1x: Secret Nightgown Gift 1x: Blonde Colored Crayon 1x: Luscious Blonde Hair 1x: Home at the Wayward Squirrel 1x: Platinum Gearhead Locks 1x: Squirrelys Offtime Saloon

The most expensive item I have with a price tag was my Malice, although my Ether was the most expensive to purchase at 400,000,000 sP.

Mine is the Standard of the Falcon @ 34,499,995 sP. :)