Just that
I go through candles quite frequently as I have a stoma bag and therefore is very smelly.
I do have some ££ candles in bedroom and lounge but when I change my bag in the bathroom I like to have one burning to mask the smell.
I've bought ones from H&M, Tescos which all smell nice in store but once the top layer has been burnt there is no fragrance. 
I don't mind spending upto £15 for a largish candle but don't want to spend more as it's only on for a max 30 mins.
Like I said I d rather not use my expensive ones.
I like fresh especially aquatic fragrances but if anyone can recommend a range please
I've also posted on another subject