there are multiple grades of paraffin, your mileage may vary.
low melting point parafin melts at ~ 130 F
medium is 130 F to 145 F
high melt point is 145 F to 150 F
beeswax is 144 to 147 degrees farenheight.
plumbers candles usually have a higher stearic acid content to slow down burn time, this also raises the melting point closer to beeswax.
most dollar store candles are cheaper, with lower melt points.....
A side point the Coghlans model is available for around 5.00