I'd like your input on an idea I've been kicking around for a little over a year. After I published the map of Portland growler prices, Jeff Alworth suggested the notion of the Growler Price Index, or GPI. He figured that the average cost of a growler around town was $10, so if you saw one cheaper than that, it was a good deal.
Taking Jeff's idea one step further, I'd like to compute quarterly price indexes for beer in Portland, so that we can watch price trends over time. It seems like the following indexes would be interesting:
- Retail six-pack index
- Retail bomber index
- Pub pint index
- Pub happy-hour pint index
- Pub pitcher index
- And, yes, growler price index
Ideally I would gather these prices 4 times a year, on the solstices and equinoxes -- the upcoming equinox is what motivated me to finally ask for help. With the caveat that this has to be a doable chunk of work for me, and it can't be all things to all people, I would like your advice on the following matters:
- Which beers go into the retail six-pack index and bomber index?
- Which retail outlets do I gather the prices from?
- Which bars do I gather the prices from?
- Do brewpubs go into a separate category than non-brewing pubs?
- Is the happy hour price the lowest pint price at the place (e.g. Roots $2.50 Tuesday) or the daily happy hour price (Roots $3.50 happy hour)?
- Six-packs: Bridgeport IPA, Deschutes Black Butte, Full Sail Amber, Terminal Gravity IPA, Widmer Broken Halo. Bombers: Hopworks IPA, Laurelwood Red, Lompoc C-Note, Ninkasi Total Domination, Rogue Brutal Bitter.
- Retail stores: Beermongers, Belmont Station, Fred Meyers, New Seasons.
- Bars: Bailey's Taproom, Belmont Station, Green Dragon, Horse Brass, Vincente's Pizza.
- Brewpubs: Barley Mill, Bridgeport, Deschutes, Hopworks, Laurelwood, Lucky Lab, New Old Lompoc, Roots, Widmer Gasthaus