rugal
adj
(a) careful and thrifty, esp with money and food 节约的, 节俭的, 节省的(尤指对金钱和食物)
a frugal housekeeper 节俭的管家.
(b) of life in which such care is shown 生活俭朴的
They lived a very frugal existence, avoiding all luxuries. 他们生活非常俭朴, 力避奢华.
(c) costing little; small in quantity 花费少的; 省钱的; 小量的
a frugal meal of bread andcheese 只有面包和奶酪的便餐.
I suggest that we ask users of this machine what they think about it. We can photograph them using it too. Then we can put their comments at the top of the advertisement in big print. We can bring in some humour too. People enjoy reading humorous ads.