Spud U Like - any verified nutrition info?

I'm off out tonight with my bezzie for a delicious nutritious baked potato at SpudULike. I've searched the web and there's very little nutrition info to be found. I've also checked the MFP database, which very helpfully lists calories for an 'average' potato and lists the various fillings. BUT! The spuds in Spudulike are massive, I find it hard to believe they are only 275 cals. Also the quantities given for the fillings are around 115g, and I'm sure you get more than that. Can anyone please offer any info? Don't want to massively underestimate my cals for the day.....