'We've seen cost escalations right across the economy and supply chain shortages, and that's what's happening when we see variability in the cost of staples like that."
MPs across the House, including Act deputy leader Brooke Van Velden and Greens co-leader James Shaw, say their personal supermarket trips have taken a hit.
"It's affecting everybody, but it's not affecting everybody equally," Shaw said.
Infometrics principal economist Brad Olsen said these are real issues people are dealing with, and the surge in toilet paper costs just scratches the surface.
"The increase is a bellwether for the generalised level of cost inflation we're seeing."
Pressure has been mounting on suppliers, with Quilton toilet paper quitting the New Zealand market last year due to rising production costs.
A number of supermarkets have also limited the amount customers can buy, in a bid to maintain sufficient stock and stop people hoarding at home during the Covid-19 pandemic.