It's actually much less than 320 m/s—that's a figure for a fast transfer. If you have time for it, three-body dynamics let you get arbitrarily cheap transfers i

It's actually much less than 320 m/s—that's a figure for a fast transfer. If you have time for it, three-body dynamics let you get arbitrarily cheap transfers in the regions of the Sun/Earth/Moon Lagrange points, https://nebula.esa.int/sites/default/files/neb_study/1167/C4000107618ExS.pdf https://nebula.esa.int/sites/default/files/neb_study/1167/C4... (Table 1 disposal options: 88.56 m/s to crash Gaia into the Earth—or even just 6.18 m/s to crash Euclid, another SEL-2 dweller).