For Sale Grabo PLUS Portable Cordless Vacuum Suction Cup

[JS1]

I'm laying some 1200 x 600 20mm porcelain on a 4m x 8m patio, its a one off job and I'm thinking of buying two of these - Grabo PLUS Portable Cordless Vacuum Suction Cup For Smooth & Rough Surfaces With Pressure Gauge 1 x 14.8v Li-ion Battery - https://www.*******************/product/grabo-plus-portable-cordless-vacuum-suction-cup-for-smooth---rough-surfaces-with-pressure-gauge-1-x-14-8v-li-ion-battery

Will they be easy to sell on this site for say £350 for the pair?

Thanks