Just for grins I did a search for those John Varvatos triple buckle boots and found them in many places from $500 to $1,500. Now to reproduce those boots without any leather experience and no tools, no sewing machine, no leather, no pattern and no experience would be impossible for the £1,000.00 you don't have.
Don't stop dreaming. Start looking for boot patterns, pricing leather, and use YouTube to look at videos on boot making (see the tools and techniques needed) and educate yourself. Start by searching for how to make them.