With no background genetics and just Lesser/Lesser or Lesser/Mojave the price will range from $300-$500 with females normally commanding a higher price: of course Quality/Size/Age of specimen will also adjust cost. There are always exceptions online and sometimes people need to vend snakes quickly to make space for growing hold-backs...if cost is an issue then you can probably find a good deal online (even with shipping) if you are patient enough. Of course buying online can have its own hazards...
As for the prices at expos and shows: they can vary. I have seen situations where there are few yearling BELs available at a reptile expo and the vendors marking them up as high as $800 (with room to negotiate), and on the other end-I have seen shows where everyone has BELs and the vendors mark them down with $200 being about the lowest. It really depends on the market competition and the individual vendors. Usually if you look up a vendor in advance you can find their prices online before the show. If their price is higher at the show than it is online: you can mention it to them...and they will usually give it to you at the online cost (and you will dodge the shipping fees).
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