In the US Business license, liability insurance, blanket insurance policy if working out the house, quarterly tax returns are not bike items that need to be considered
Not sure how it is in Italy for the above
maybe a model of keeping most common stuff and ordering as needed.
currently in the US with supply chain issues bikes shops are often having to order parts or offer this is what we have for tires, select what we have
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Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)