Harvest was good for 2017, so should be good availability for Citra, and maybe lower in price. However a lot of commercial brewers also use Comet as a replacement.
Commercial prices for hops are usually by the Kg, as pack sizes maybe 5/10/20kg, it gives a level playing field on price.
@Sadfield,
Yes P45 are increased in concentration, but not 45% of original matter. eg hops with an original AA content of 8% may end up as 12%, or 5% to 8%. The reason these were introduced, you may have a variety, that for arguments sake ranges from 5.8-8.3. A global brewer, brewing at different sites may ask to have the hops 'standardised' to 10% so they are adding the same amount in the beer globally. Type 45 is more popular for lower AA hops, eg Saaz, where the AA may only be 1.5%. The volumes shipped could be halved too.
You are right, the lupulin is separated by cryo freezing the hops and a certain level of the leaf (petal) is added back. The problem occurs when you need to produce P45 pellets from high alpha hop, the concentration of lupulin prevents pellet (even for P90) being produced much above 22%AA, hence Cryo powder, as it is too high in AA/resin/oil to make pellet.
As to leaf, only about 1+% of hops remain as whole hop, globally<60% is made into pellet and <40% into CO2 and other hops products (oils, Iso-alpha, Tetra, Hexa oils etc), so the preference for leaf is only really in the UK (obviously a few exceptions, France, Italy a few in the US). As UK breweries expand and sell their old brewery off, (they usually move to pellet), which then gets bought and sustains the leaf need.
Fresh leaf does give very good results, but degrades quickly compared to pellet. Pellet does lose a little during production, but due to storage stability soon out performs leaf.
WBR
Hoppy