I just came across this card so 2 question about it.
What is the pokemon card labratory promo card ?
and what is it worth?
Is it this card?
If so I believe that was given out in Battle Roads 2004. This page has some more info and a translation of the card: bulbapedia.bulbagarden.net/wiki/Pok%C3%A9mon_Card_Laboratory_(PCG-P_Promo_24)
Honestly I have never really seen that card for sale, then again I never really looked for it 
I would say maybe around $25 but thats just a complete guess.
Sounds reasonable-ish.
I reckon that prices are variable. It’s not a card you see every day, definitely over-hyped on release but has a nice history and I can see people overpaying for it.
If you’re selling I would put it at $50 to see if you get any bites
Yeh thats the one it up on one site for $50 but that might be the high end.
I got mine for around $25. I know where one is for 10 GBP, PM me if you’re interested.
i wasnt looking to buy one i was just wondering what it was and how much it was worth tbh.
I actually think this card is undervalued. I just like the illustration, and it is PCL, one of the best things to happen to pokemon. 
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